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Majorana Fermion in a System of OneDimensional Magnetic Atomic Chain(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2017年03期
Page:
110-
Research Field:
·物理学·
Publishing date:

Info

Title:
Majorana Fermion in a System of OneDimensional Magnetic Atomic Chain
Author(s):
Yang Shuangbo
Jiangsu Key Laboratory for NSLSCS,School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China
Keywords:
Majorana fermion; magnetic atomic chain; BdG equation; localized density of states
PACS:
O413.1
DOI:
10.3969/j.issn.1001-4616.2017.03.016
Abstract:
For a model of one dimensional magnetic atomic chain in both a helical magnetic field and a transverse uniform magnetic field,we calculate its energy spectrum by solving Bogoliubov-de-Genes equation selfconsistently in the mean field approximation. We find that for a certain parameter setting,energy spectrum evolving with amplitude of helical magnetic field,appears Majorana fermion eigenstates. We calculate local density of states,and find that the local density of states for Majorana fermion shows peaks at the both ends(or at middle)of the magnetic atomic chain. We calculate wave function,and its spatial distribution agrees with local density of states.

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Last Update: 2017-09-30